[Simh] 6-bit variants of ASCII (AKA DEC SIXBIT)

[Sergii Kolisnyk]

Hello!

Could you give me some web links to definitive manuals on DEC SIXBIT codes?
If there are none, may be somebody could take time and tell from his memories
about _different_variants_ ?

I'm putting what I can find or remember here:
http://en.wikipedia.org/wiki/Sixbit_code_pages
I have found ECMA-1 standard (may be you know its ANSI and/or ISO names?)
http://www.ecma-international.org/publications/files/ECMA-ST-WITHDRAWN/ECMA-1,%201st%20Edition,%20March%201963.pdf

ECMA-5 tells to use DEL-escaping to represent full ASCII code space:
http://www.ecma-international.org/publications/files/ECMA-ST-WITHDRAWN/ECMA-5,%203rd%20Edition,%20June%201970.pdf

I'm also wondering how it got into ISO/IEC 7811-2
http://cardforum.cardprom.ru/standard/ISO-card-magnetic18.gif

Could you correct my mistakes, if any?
(As I remember, PDP-8 used other variant, with halves of code space
swapped, so A got 01 code.)

Thank you in advance!

Best regards,
Sergii Kolisnyk